<template>
	<div>
		<el-breadcrumb separator="/">
			<el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
			<el-breadcrumb-item>权限管理</el-breadcrumb-item>
			<el-breadcrumb-item>角色列表</el-breadcrumb-item>
		</el-breadcrumb>

		<el-card>
			<el-row>
				<el-col>
					<el-button type="primary" @click="addDialogVisible = true">添加角色</el-button>
				</el-col>
			</el-row>
			<el-table :data="rolesList" border stripe>
				<el-table-column type="expand">
					<template v-slot="scope">
						<el-row :class="['bdBottom', i1 === 0 ? 'bdTop' : '', 'vcenter']"
							v-for="(item1, i1) in scope.row.children" :key="item1.id">
							<el-col :span="5">
								<el-tag closable @close="removeRightById(scope.row, item1.id)">
									{{item1.authName}}
								</el-tag>
								<i class="el-icon-caret-right"></i>
							</el-col>
							<el-col :span="19">
								<el-row :class="[i2 === 0 ? '' : 'bdTop', 'vcenter']"
									v-for="(item2, i2) in item1.children" :key="item2.id">
									<el-col :span="6">
										<el-tag type="success" closable @close="removeRightById(scope.row, item2.id)">
											{{item2.authName}}
										</el-tag>
										<i class="el-icon-caret-right"></i>
									</el-col>
									<el-col :span="18">
										<el-tag type="warning" v-for="(item3, i3) in item2.children" :key="item3.id"
											closable @close="removeRightById(scope.row, item3.id)">
											{{item3.authName}}
										</el-tag>
									</el-col>
								</el-row>
							</el-col>
						</el-row>

						<!-- <pre>{{scope.row}}</pre> -->

					</template>
				</el-table-column>
				<el-table-column type="index"></el-table-column>
				<el-table-column label="角色名称" prop="roleName"></el-table-column>
				<el-table-column label="角色描述" prop="roleDesc"></el-table-column>
				<el-table-column label="操作">
					<template v-slot="scope">
						<el-button size="mini" type="primary" icon="el-icon-edit" @click="showEditDialog(scope.row.id)">
							编辑</el-button>
						<el-button size="mini" type="danger" icon="el-icon-delete"
							@click="deleteRoleById(scope.row.id)">删除</el-button>
						<el-button size="mini" type="warning" icon="el-icon-setting"
							@click="showSetRightDialog(scope.row)">分配权限
						</el-button>
					</template>
				</el-table-column>
			</el-table>
		</el-card>

		<el-dialog title="添加角色" :visible.sync="addDialogVisible" width="50%" @close="addDialogClose">
			<el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="100px">
				<el-form-item label="角色名称" prop="roleName">
					<el-input v-model="addForm.roleName"></el-input>
				</el-form-item>
				<el-form-item label="角色描述" prop="roleDesc">
					<el-input v-model="addForm.roleDesc"></el-input>
				</el-form-item>
			</el-form>
			<span slot="footer" class="dialog-footer">
				<el-button @click="addDialogVisible = false">取 消</el-button>
				<el-button type="primary" @click="addRole">确 定</el-button>
			</span>
		</el-dialog>

		<el-dialog title="修改角色信息" :visible.sync="editDialogVisible" width="50%" @close="editDialogClose">
			<el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="100px">
				<!-- <el-form-item label="角色ID">
					<el-input v-model="editForm.roleId" disabled></el-input>
				</el-form-item> -->
				<el-form-item label="角色名称" prop="roleName">
					<el-input v-model="editForm.roleName"></el-input>
				</el-form-item>
				<el-form-item label="角色描述" prop="roleDesc">
					<el-input v-model="editForm.roleDesc"></el-input>
				</el-form-item>
			</el-form>
			<span slot="footer" class="dialog-footer">
				<el-button @click="editDialogVisible = false">取 消</el-button>
				<el-button type="primary" @click="editRole">确 定</el-button>
			</span>
		</el-dialog>

		<!-- 分配权限对话框 -->
		<el-dialog title="分配权限" :visible.sync="setRightDialogVisible" width="50%" @close="setRightDialogClosed">
			<el-tree :data="rightsList" :props="treeProps" show-checkbox node-key="id" default-expand-all
				:default-checked-keys="defKeys" ref="treeRef"></el-tree>
			<span slot="footer" class="dialog-footer">
				<el-button @click="setRightDialogVisible = false">取 消</el-button>
				<el-button type="primary" @click="allotRights()">确 定</el-button>
			</span>
		</el-dialog>

	</div>
</template>

<script>
	export default {
		data() {
			return {
				rolesList: [],
				addForm: {
					roleName: '',
					roleDesc: ''
				},
				addFormRules: {
					roleName: [{
						required: true,
						message: '请输入角色名称',
						trigger: 'blur'
					}],
					roleDesc: [{
						required: true,
						message: '请输入角色描述',
						trigger: 'blur'
					}]
				},
				addDialogVisible: false,
				editDialogVisible: false,
				editForm: {},
				editFormRules: {
					roleName: [{
						required: true,
						message: '请输入角色名称',
						trigger: 'blur'
					}],
					roleDesc: [{
						required: true,
						message: '请输入角色描述',
						trigger: 'blur'
					}]
				},
				setRightDialogVisible: false,
				rightsList: [],
				treeProps: {
					label: 'authName',
					children: 'children'
				},
				defKeys: [],
				roleId: ''
			}
		},
		created() {
			this.getRolesList();
		},
		methods: {
			async getRolesList() {
				const {
					data: res
				} = await this.$http.get('roles');
				if (res.meta.status !== 200) return this.$message.error('获取角色列表失败！');
				this.rolesList = res.data;
			},
			addDialogClose() {
				this.$refs.addFormRef.resetFields();
			},
			addRole() {
				this.$refs.addFormRef.validate(async valid => {
					if (!valid) return;
					const {
						data: res
					} = await this.$http.post('roles', this.addForm);
					if (res.meta.status !== 201) return this.$message.error('添加角色失败');
					this.addDialogVisible = false;
					this.getRolesList();
				})
			},
			async showEditDialog(id) {
				const {
					data: res
				} = await this.$http.get(`roles/${id}`);
				if (res.meta.status !== 200) return this.$message.error('查询信息失败');
				this.editForm = res.data;
				this.editDialogVisible = true;
			},
			editDialogClose() {
				this.$refs.editFormRef.resetFields();
			},
			editRole() {
				this.$refs.editFormRef.validate(async valid => {
					if (!valid) return;
					const {
						data: res
					} = await this.$http.put(`roles/${this.editForm.roleId}`, {
						roleName: this.editForm.roleName,
						roleDesc: this.editForm.roleDesc
					});
					if (res.meta.status !== 200) return this.$message.error('修改角色信息失败！');
					this.editDialogVisible = false;
					this.getRolesList();
					this.$message.success('修改角色信息成功！');
				})
			},
			deleteRoleById(id) {
				this.$confirm('此操作将永久删除该角色, 是否继续?', '提示', {
					confirmButtonText: '确定',
					cancelButtonText: '取消',
					type: 'warning'
				}).then(async () => {
					const {
						data: res
					} = await this.$http.delete(`roles/${id}`);
					if (res.meta.status !== 200) return this.$message.error('删除失败')
					this.$message({
						type: 'success',
						message: '删除成功!'
					});
					this.getRolesList();
				}).catch(() => {
					this.$message({
						type: 'info',
						message: '已取消删除'
					});
				});
			},
			removeRightById(role, rightId) {
				this.$confirm('此操作将永久删除该权限, 是否继续?', '提示', {
					confirmButtonText: '确定',
					cancelButtonText: '取消',
					type: 'warning'
				}).then(async () => {
					const {
						data: res
					} = await this.$http.delete(`roles/${role.id}/rights/${rightId}`);
					if (res.meta.status !== 200) return this.$message.error('删除失败')
					role.children = res.data;
				}).catch(() => {
					this.$message({
						type: 'info',
						message: '已取消删除'
					});
				});
			},
			async showSetRightDialog(role) {
				this.roleId = role.id;
				const {
					data: res
				} = await this.$http.get('rights/tree');
				if (res.meta.status !== 200) return this.$message.error('获取权限数据失败！');
				this.rightsList = res.data;
				this.getLeafKeys(role, this.defKeys)
				this.setRightDialogVisible = true;
			},
			getLeafKeys(node, arr) {
				if (!node.children) {
					return arr.push(node.id)
				}
				node.children.forEach(item => {
					this.getLeafKeys(item, arr);
				})
			},
			setRightDialogClosed() {
				this.defKeys = [];
			},
			async allotRights() {
				const keys = [...this.$refs.treeRef.getCheckedKeys(), ...this.$refs.treeRef.getHalfCheckedKeys()];
				const idStr = keys.join(',');
				const {
					data: res
				} = await this.$http.post(`roles/${this.roleId}/rights`, {
					rids: idStr
				});
				if (res.meta.status !== 200) return this.$message.error('分配权限失败！');
				this.$message.success('分配权限成功！');
				this.getRolesList();
				this.setRightDialogVisible = false;
			}
		}
	}
</script>

<style>
	.el-tag {
		margin: 7px;
	}

	.bdTop {
		border-top: 1px solid #eee;
	}

	.bdBottom {
		border-bottom: 1px solid #eee;
	}

	.vcenter {
		display: flex;
		align-items: center;
	}
</style>
